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tia_tia [17]
2 years ago
7

Simplify 7 + (−3). Please hurry -10 -4 4 10

Mathematics
2 answers:
Viefleur [7K]2 years ago
7 0

Answer: The answer is 4. 7+(-3) is like 7 minus 3.

Step-by-step explanation:

Lilit [14]2 years ago
6 0

Answer:

4

Step-by-step explanation:

since the 3 is negative, you need to take 3 away from 7 = 4

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The URS construction company has submitted two​ bids, one to build a large hotel in London and the other to build a commercial o
topjm [15]

Answer: Our required probability is 0.55.

Step-by-step explanation:

Since we have given that

Probability that chance of winning the hotel bid = 40%

Probability that no chance of winning the hotel bid = 100-40=60%

Probability that chance of winning the office building bid = 25%

Probability that no chance of winning the office building bid = 100-25 = 75%

So, Probability that the company will win at least one contract is given by

0.4\times 0.75+0.6\times 0.25+0.4\times 0.25\\\\=0.55

Hence, our required probability is 0.55.

5 0
3 years ago
All parbolas with vertical directrix open to the left or right<br> True or false
Alborosie
True!

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8 0
3 years ago
Babcock and Marks (2010) reviewed survey data from 2003–2005 and obtained an average of μ = 14 hours per week spent studying by
Dmitry [639]

Answer:

We do not have enough evidence to accept H₀

Step-by-step explanation:

Normal Distribution

size sample  =  n = 64   (very small sample for evaluating population of 5  years

Standard deviation 4,8

1.- Test hypothesis

H₀             null hypothesis        ⇒               μ₀ = 14       and

Hₐ     alternative hypothesis   ⇒                μ₀ ≠ 14

2.- z(c)  we assume α = 0,05  as we are dealing with a two test tail we should  consider   α/2  = 0.025.

From z table we the z(c) value

z(c) = 1.96           and of course by symmetry   z(c) = -1.96

3.- We proceed to compute z(s)

z(s)  = [ (  μ -  μ₀ ) /( σ/√n) ]           ⇒    z(s)  = - (1.5)*√64/4.8

z(s)  = - 2.5

We compare z(s)  and z(c)

z(s) < z(c)     -2.5  < -1.96  meaning  z(s) is in the rejection zone

we reject H₀ .

From the start we indicate sample size as to small for the experiment nonetheless we found that we dont have enough evidence to accept H₀

6 0
3 years ago
.84 is 1/10 as much as
maw [93]
Hello there.
<span>
84 is 1/10 as much as  
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4 0
3 years ago
Answer plz this is a test
antiseptic1488 [7]

Answer:

-6 2/3

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